Simple Box Copyright 1998 Stephen Hecht. All Rights Reserved A 10cm x 14cm sheet produces a model 3cm x 3cm base and 4 cm high 2. Mountain crease (try not 1. White side up. Valley 3. Mountain crease at 45 to crease center square). degrees (flaps do NOT crease at 45 degrees. meet at center line). 5. In progress. 4. Creasing finished. Lift four corners, using 6. 3-D box-shape. creases from steps 1 & 2. All triangular flaps inside. 9. Done. 8. Side view. Valley down on 7. Top-view. Push small creases from step 3. You may triangular flaps against wall, need to flatten the box slightly then large flaps. Tips of large to avoid tearing. flaps need to be folded a bit.